Checkerwork supporting and holding means for blast stoves



4May 31, 1932. @ism/ER 1,860,368

CHECKERWORK SUPPORTING AND HOLDING MEANS FORJBUAST 4s-To/Es Filed March 3o, 1951y 2 snetssnee't i r v r v l MaY 3l, 1932- .1.1.1. SEM/ER j 1,860,368.l

CHECKERWORK SUPPORTING AND HOLDING MEANS FOR BLAS'III STOVES Filed March so, 19:51 u 2 Sheets-sheet 2 6. -JJA mi n "l". l

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4 will Patented May 3l, 19132 UNITED STAT-Esi TAYl J'. SESAVER, 0F EVANSTON, ILLINOIS, ASSIGNOR TO `E. A. BRASSERT & OOMPA-N-Y,

PATENT voFlucia OF CHICAGO, ILLINOIS, A GRCP0R A'IIGN'v OF ILLINOIS'` l A' cHEcKERwonx snrronriNG AND HOLDING MEANS Fon. BLAST s'rovEs Application mea Maren so, 1931. serial Np. 526,198.

Heretofore hotblast stoves for heating air for blast furnaces have usually been constructed with checker supports constructed ofbrick piers and brick arches, also of metallic supports consisting of columns, girde-rs,

and metallic grids, but in such constructions it is well knownthat the metallic support or f bottom has a far greater coelhcient of eXpansion than first quality lire brick.` It will therefore be'manifest that due to the heating4 and cooling of the Stove,vthe checker brick and metallic grids will move out of alinement, with the result that the circulation of air land the products of combustion throughthe grids and checkers willv be impeded.

It is one of the objects of the present inl vcntion to provide improved means for maintaining theopenings in the checker bricks in alinement with the openings or passages through the metal supports upo'n which the checker bricks rest so as not to interfere with the circulation of the products'of combustion and air. L

A further object is to provide improved means whereby a suliicient distance between adjacent grids will be maintained to permit of expansion thereof.

A further object lis to provide an improved construction of grid, whereby filler bricks or tile which are usually inserted into thel checker bricks, but which will provide passages through the checker bricks. 'will serve as a means for interlocking with thel grid,

the row of checker brick adjacent thereto, by' extending into both the checkerl brick and the gridj to breakjoint therewith. The filler brick is preferably of. length to terminate for a substantial distan@ the checker brick so as to permit of the insertion into the checker brick one end of another filler member or brick forthe next adjacent superposed checker brick, to interlock the checker brick of one row with the respective' bricks ,of the next adjacent row.

A further object is to provide an lmproved form of supporting column for the checker bricks, so shaped as to allow the products of combustion, as well as'the hot blast, ready `entrancer into the ilues directly above the columns.

short of the top of,

`To the attainment of these ends and the accomplishment of other new and useful ob-r,

jects as will appear, the invention consists in the features of novelty in substantiallyA th f construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention l and in which Figure 1 is an irregular horizontal sectional view takenon line 1 1, Figure 6, of a f stove of this character constructed in accordance with the principles of this invention.

Figure 2 is a vertical sectional view taken l on line 2-,-2,'Figure 1. j Figure'S is a detail perspective view of the proximate ends of adja'centgirders or supporting beams. Y

Figure 4 is a detail sectional view taken on [line 1 4, Figure 2.

Figure 5 is a detail perspectivel view of the upper end of one of the supporting columns.

' Figure 6 is a vertical sectional view take Figure 9 is a perspective view of one of the' checker brick.

Figure 10 is a perspective view of one ofb filler bricks. y

Figure 11 is a perspectiveview of one of theosupporting plates for the llerjbrick.

Referring more particularly to the drawings the numeral 15 designates generally the lsupporting columns arrangedin the bottom of the stove with the bases 16 resting upon the bottom 17 of the stove 18. Thesecolumns are constructed of any suitable material and are of any desired size and height according to the Adistance that it is desired to arranged theA vcheckerbrick support above the y Y bottom of the stove. i

cored out as at 19 ,and in the upper ends of the column is provided a cored out orre- The body portions lofthe columns 15 are cessed portion 2() opening through the top of the column. -The bottom of the recess 20 is preferably tapered as at 21 andthe recess 20 is of a sufficient depth so las to permit the products of combustion and the hot gases to v enter and `flow through the recess 20 unobstructed.' Arranged at the top ofthe columns' are spaced upwardly projecting ears f or extensions 22 'and shoulders 23 are formed in the walls of the recess 2O at the base of the projections 22 to form a support for girders or beams 24.

The beams 24 may be constructed of any suitable material but are usually of a metallic formation. and may be of any desired height and width, and extending through the girders are iues or openings 25. Arranged at the base of each of the girders and at the extremities thereof are laterally projecting lugs 26.

The girders obeams 24 rest upon the `col umns l5 so that the bottomslof the gir-ders are supported by. the shoulders 23 and the lugs 26 will enter spaces 27 between the respective ears or projections 22 as 'shown more clearly in Figures 2 and 4, and the spaces 27 into which` the lugs 26 project are of a size so that when the ends of two of the girdgrids are of such a size that if desired the Aet.

proximate ends of adjacent grids will ter--y minate short of each other`so as to permit of expansion of the grids.

These grids are provided with openings 29 therethrough of any Vdesired size and .when the grids are placed upon the beams 24, the

ings 25 and by reason of the cored out portion or recesses 2O in the columns 15 the flues im` mediately above the columns will not be blocked and the products of combustion and the air may freely iiow therethrough permitting an easy entrance to the flues directly above the columns.

The checker brick 30 may be of the ordinary and well known constructiom but is here shown as being octagonal in outer configuration and is provided with the usual opening 3l therethrough. These checker brick are placed upon the upper surface of the supporting grids 28 as shown more clearly in Figure 8, and the width of the upper surface 32 of the grids 28 between the adjacent openings 29 is sulicient to receive one edge of adjacent tiles., The remaining rowsof checker brick 30 are superposed upon the first row, as is usual in stoves of this character.

The checker brlck are of 'a ceramic nature while the supporting grids 28 are of a metallic structure and by reason of the different characteristics of these parts the 4metallic supports or bottoms have an inherent greater coe'icient of expansion than a first quality lire brick or a ceramic product from which the checker bricks are constructed, and'it will therefore be manifest that during the operation of the stove due to the heating up and the cooling off of the stove, the checker brick and the metallic grids will be Vdisplaced one .with respect to the other s o that the registering openings therethrough will move out of alinement lor register.

Therefore in order to overcome this objecl tion and difficulty it is proposed to interlock the checker brick with the grids and `for that purpose the filler brick 33 which is usually inserted within the checker brick 30 is made to fit within the openings'29 above and to l ioo rest upon the shoulders 34. These supportl ing plates 35 are, provided with cut away portions 36 to form passages for the pr0d ucts of combustion and the air so as notto t 'interrupt the circulation thereof through the openings 29 in the grids and in-to the checker brick 30. 1

` The filler bricks 33 are so shaped as to i form passa-gesthrough the checker brick 30 as shown more clearly inFigure 7. openings 29 will be 1n register with the open- In yassembling the structure the lower row of checker brick 30 is placed upon the sup.

porting surface 32 of the grids with the open-l ings 31 in alinement with the openings 29,

previous to which, however, the supporting plates 35 are placed in the vopenings 29 upon` the shoulders 34.

L rIhe filler brick 33 are then placed in the lower row of the vchecker brick and the filler brick are of such a length that the lower end thereof will project beyond the bottom of the checker brick and into the opening v29 of the grid 28 to engage and rest upon'the plate 35. In this position the filler brick 33 will terminate fora considerable distance short of the top of the checker brick, so that when another row of checker bricks is superposed upon a lower row of checker bricks additional filler bricks 33 may be inserted thereinto so as toi project beyondthe lower edge of the superlli 4Q respect to the support. 1

osed row and into the space above the fille rick of the next lower row. It will therefore be manifest that with this construction theiiller bricks Will interlock the checker bricks not only with the grids 29 butJ with each other and by so doing the iiller brlcks will break joint with the grid a'nd of the checker brick or tile to maintain them against any mis-alinement, and to prevent any shifting between these parts from taking place, as in order to do so it will be necessary to shear the cross section of the filler bricks, and, as these iiller bricks are of a substantial construction, such a shearing or breaking of the filler bricks is not possible, with the result that these parts and especially the openings therethrough will be maintained in alinement or register so that the circulation of the products of combustion and of the air will not be impeded.

While the preferred form of the invention `has been herein shown and described, itis to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claims, without checker bricks and into the respective apertures in the support 'for maintaining the checker brick agalnst lateral movement withI 2. In a hot blast stove a checker brick support having openings therethrough, shoulders in said openings a substantial distance from the top of the support, open checker bricks mounted upon the support with their openings in communication'with the openings in the support, and locking elements inserted in the checker bricks to extend therebelow and intothe respective openings in the support to break joint with the bricks and support, said element being supported by said shoulders. l

3. In a hot blast stove a checker brick support, lhaving openings therethrough, shoulders in the openings a substantial distance below the top thereof, 'supporting plates in ysaid openings resting upon said shoulders and spaced from the top of the support, and locking ,elements in the 'bricks -'and extending therbelow and into the openings in the-said support and resting upon saidplate.

4. In a hot blast stove a checkervbrick support having openings therethrough, a pluralit-y of superposed rows of checker bricks '65 resting upon the supports, said support and said checker bricks having diiierent co-eiicients of expansion, said bricks having opene ings therethrough, the openings in the respec. t1ve bricks of the rows and the openings "in,

the respective support being in register,and means within the bricks and extending from one row to the next adjacent row and breaking joint with the respective bricks of the rows andl with said support formaintaining the parts locked against relative lateral displacement. i l

5. In a hot blast stove, columns, metallic girders supported by the columns, means for interlocking the girders'with the-Columns and for maintaining the proximate ends of the girders normally spaced, a metallic apertured support for and upon which the checker bricks rest, and eans for interlocking the checker bricks and the said support against displacement one with respect to the other under the influence of contraction or 'expansion of any of the parts.

6. In a hot blast stove, columns, metallic girders resting upon said columns, means for interlocking the ends of the girders with the columns, the proximate ends of adjacent girders being normally maintained spaced to permit of expansion lof the girders, the. said means operatin to permit a' relative movement of the gir ers with respect to the columns, a support for the checker bricks resting upon the girders, and means' for interlocking the checker bricks and said support to i maintain them against relative displacement under the influence of relative contraction and expansion of the co-operating parts.

7. In a hot blast stove, columns, girders resting upon the columns, said girders having uprightk flues therethrough, the portions .of the columns adjacent the girders ybeing cored in a manner that the columns will form no obstruction to any ofthe iiues in the girders, and checker bricks supported above the girders.

8. In a hot blast stove, columns, girders resting upon the columns, said girders having upright flues therethrough, the portions of the columns adjacent the girders being cored in a manner that the columns `will formV Ano obstruction to any of the ues in the girders, checker bricks supported above the girders, and -(3o-operating means in the girders and columns for maintaining the proximate ends of ladjacent girders normally spaced to permit expansion-of the girders, the said means also operatin to-permit a relative movement of the gir ers with respect to the columns under the eifectsof expansion and contraction.

9. Ina hot blast stove, columns` spaced Apairs of ears at the top of the columns, the

'ears of the respective pairs being spaced, girders resting'upon the top of the columns between' the pairs of ears, projections on the girders extending between the ears of the respective pairs, thel proximate ends of adjacent girders being spaced to permit of ex pansion of the girders, vand checker bric-ks supported above the girders.

10. In a hot blast stove, columns, spacedl pairs of ears at the top of the columns, the

ears of the respective pairs being sp'aced, gird ers resting` upon the'top of the columns between thepairs of ears, projections on the girders extending ybetweenthe ears of the spective ps'rs, the proximate ends of adjacent girders being spaced to permitof Vexpansion of the 'rders, apertured grids supported by the gir ers, checker bricks supported -by the grid, and means orinterlocking the checker bricks and grid `whereby relative displacement of one with respect to the other under the inuence of contraction and expansion will be prevented* 11. In a hot blast stove, columns, spaced `'pansion of the girders, the columns being of March, A. D. 1931.

pairs of ears at the top of the columns, the

ears of the respective pairs being spaced,

girdersv resting upon the top ofthe columns between the pairs of ears, projections on the girders extending between the ears of the respective pairs, the proximate 4ends of adjacent girders being spaced to permit of eX- shaped in a manner that they will form no obstruction to any ofthe iules in the girders.

12. In a hot blast stove, columns, girders supported by the columns, grids supported by the girders, checker work supported by the grids, means for interlocking the checker work andgrids together for maintaining them against ,relative displacement under the influence of different degrees of expansion or contraction thereof, and registering lues through the girders, grids and. checker Work, 'the columns being so shaped as to form no obstructionto any of the said lues.`

Inltestimony whereof I have' signed my name to this specification, onths 27th day JAY J. SEAlVER. 

